A native North American.
Because after all these years, humans have developed resistance.
These days, smallpox exists only in a few dedicated research laboratories in the United States and Russia, and a couple of other places. "In the wild", smallpox is extinct, the first major worldwide disease to be eliminated. Before about 1900, smallpox could be easily transmitted by casual contact; breathing the same air, sharing the same blankets, or by touch. It was wildly virulent and quite deadly to its victims. In pre-1400s Europe, smallpox was a serious disease, but most people had developed at least a little resistance because of repeated contact. When Europeans began to travel the world, smallpox traveled with them. Smallpox had never existed in the Americas or in much of Asia, and the arrival of smallpox was deadly to large numbers of people, who had no resistance to it.
Because of the Europeans military power which were superior than those of africans
Ultimately, smallpox and other diseases like measles killed off most Native American populations, making it very easy for Europeans to take over the New World. The natives had no resistance to diseases that the Europeans had, and were much more suspectible.
Smallpox originated in "the Old World" (Eurasia and Africa) and was brought to "the New World" (the Americas) by Europeans. So, basically, no. US troops didn't "bring smallpox to Europe" because it was already there.
Many caught European diseases such as smallpox. Because they had no built-in resistance to these diseases, tens of thousands of native Americans died. Because the Europeans wanted to replace the native American workers who had died, they began to bring Africans to the New World to work as slaves.
Many caught European diseases such as smallpox. Because they had no built-in resistance to these diseases, tens of thousands of native Americans died. Because the Europeans wanted to replace the native American workers who had died, they began to bring Africans to the New World to work as slaves.
Because the didn't have all the advanced and great explorers that Europe had.
While the human form of HIV/AIDS is present only in humans, there are similar strains of the AIDS virus that are found in other mammals, such as cats and chimpanzees. Diseases often aren't spread among different species because we have built up different immunities. Even among human populations, diseases can be much more severe among some cultures than others. Take smallpox, for example. The Europeans had developed some resistance to smallpox prior to "discovering" America. When smallpox was introduced to the Native American population, the native population was decimated because they had no resistance to it.
DISCLAIMER:THIS IS VERY OVERSIMPLIFIED one of the many reasons why Native American Tribes suffered after the Revolution is Disease . Especially the smallpox virus .For example the Cherokee. Nearly all the population of the Cherokee tribe was wiped out because of the smallpox epidemic that took place. The source of this epidemic however, was the Europeans. When the Europeans came to the so called ''New world'', they brought the smallpox virus with them, through trade with the native tribes. Unlike the Europeans, the natives were not accustomed to this and the epidemic struck. This is one of the many ways this question can be interpreted.
The Europeans followed Christopher Columbus because they wanted th see for them self what he found
One third of the Blackfeet Tribe died of smallpox in 1780. A second smallpox epidemic hit in 1837. In the winter of 1883-1884 500 Blackfeet starved to death because the Indian Agent responsible for them stole their cattle and supplies.